Overview
See your true net margin live while you list, and get warned before you publish a money-loser.
Stop publishing money-losers. ShipPeek sits inside your eBay and Poshmark listing flow and shows your TRUE net margin live (after fees, shipping, and the costs most sellers forget) then turns red and warns you before you hit Publish on a listing that would actually lose money. Unlike a standalone fee calculator, you don't type anything into a separate tool. ShipPeek reads the listing you're already creating and does the math automatically, right on the page. What it accounts for: category-aware eBay final-value fees, payment + per-order fees, promoted-listing %, shipping with dimensional weight (USPS), free-shipping loss, and a returns buffer you control. Private by design: all calculations happen locally in your browser. Your listing data never leaves your device. No analytics, no tracking, no remote code. Free: live net margin on eBay. Pro (subscription): the pre-publish loss warning and Poshmark support. Payments handled by ExtensionPay/Stripe. ShipPeek is independent and not affiliated with eBay, Poshmark, or any carrier.
Details
- Version0.1.0
- UpdatedJune 20, 2026
- FeaturesOffers in-app purchases
- Size63.16KiB
- LanguagesEnglish
- Developer
Email
zbaron19@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
Support
For help with questions, suggestions, or problems, visit the developer's support site
